BIBLIOS

Document type
Journal articles

Document subtype
Full paper

Title
P, D, T and heat capacity measurements of (alpha-pinene+beta-pinene) mixtures over the temperature range 283.15K to 358.15K and pressures up to 40MPa: Experiments and modelling

Participants in the publication
Elisa Langa (Author)
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Antonio M.F. Palavra (Author)
INSTITUTO SUPERIOR TÉCNICO
Maria J.V. Lourenço (Author)
Dep. Química e Bioquímica
CQE
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
Ana M. Mainar (Author)

Summary
The density and isobaric heat capacity of the binary system {α-pinene (4,7,7-trimethylbicyclo[3.1.1]hept-3-ene (1), CAS Number 7785-26-4) + β-pinene (6,6-dimethyl-2-methylene-bicyclo[3.1.1]heptane (2), CAS Number 127-91-3)} has been measured for eleven different compositions. The density was determined at five pressures from (20 MPa to 40 MPa) and temperatures from (283.15 K to 358.15 K) and the isobaric heat capacity at atmospheric pressure and temperatures from (313.15 K to 418.15 K). Density was measured with an experimental uncertainty estimated to be ± 0.5 kg·m−3. The isothermal compressibility and isobaric thermal expansion were derived from the experimental density data. The isobaric heat capacity was determined with a DSC calorimeter being the experimental uncertainty lower than 1.5%. Isobaric heat capacity behaviour was as expected for both pure compounds and for mixtures. Two different equations of state, conventional SAFT and PC-SAFT, were applied to calculate the densities of the mixture, being the best predictions achieved with PC-SAFT equation.


Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
The Journal of Chemical Thermodynamics

Publication Identifiers

Publisher
Elsevier BV



Document Identifiers
DOI - https://doi.org/10.1016/j.jct.2012.09.012
URL - http://dx.doi.org/10.1016/j.jct.2012.09.012

Keywords
α-Pinene β-Pinene Density Heat capacity SAFT PC-SAFT mixtures liquid

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